Locking and guiding bolt for combined swinging and sliding doors.



E. T. MURPHY.

LOCKING AND GUIDING BOLT FOR COMBINED SWINGING AND SLIDING DOORS.

APPLICATION FILED APR. (SI 1918.

Patented Apr. 29, 1919,.

LSOQALOQG y u 0 Nd m ATTORNEY taken approximately on line 2--2,

nnrrnn warns career onerous.

EDWARD THOMAS MURPHY, OF NEW YORK, N. Y.

LUCJKHTG AND GU TDING BOLT FOR QOMBINED SWING-ING AND SLIDING DOORS.

To all whom it may concern:

Be it known that I, EDWARD THOMAS MUR- PHY, a citizen of the United States of America, residing at New York city, in the county of New York and State of New York, have invented new and useful Improvements in Looking and Guiding Bolts for Combined Swinging and Sliding Doors, of which the following is a specification.-

This invention relates to gravity locking bolts and guides for sliding and swinging elevator doors and has for its principal object the provision of a device of this character which will be operable to engage with the guide groove of the frame in which the door is mounted when the bolt is adjusted to one position and thereby serve as guide for the door when it is desired to slide the same, while when adjusted to another position it will be properly seated in'a keeper recess formed at one end of said groove and then serve as means to positively hold the door in a closed position.

Another object of the invention is to provide a gravity bolt for the doors of elevators which will be designed so as to prevent the same from being tampered with from the outside when the door is fully closed and locked.

In the drawings Figure 1, is a view in side elevation of a portion of an elevator door structure showing the application of the gravity bolt to the slid ng sectlon of the door.

Flg. 2, is a, vertical section there-through of F 'i'g. 1, with parts 1n elevation.

Fig. 3, is a view similar to Fig. 2, conventionally illustrating the difi'erent adjusted positions of the gravity bolt.

Fig. 4, is a vertical section through the supporting casing for the bolt showing the latter operatively associated therewith.

Fig. 5, is a horizontal section on line 55, of Fig. 4.

Fig. 6, is a View similar to a slightly modified form of bolt and casing.

The invention is used in connection with an elevator door structure in which the door consists of a swinging section 10, supported from hinges 11, at one side of the door frame and a combined sliding and swinging section 12, arranged at one slde of said section 10. The base 12, of the door frame is provided with a longitudinal groove 13, which is po- Fig. 5, showing Specification of Letters Patent. Application filed April 6,

Patented Apr. 29, 1219. 1918. Serial no. 227,151.

' sitioned at one side of the section 10, and arranged parallel therewith.

The section 12, is provided with a swiveled roller 14, adapted to travel upon a track 15, at the top of the door frame while at the opposlte upper corner of said section 12, there is a second roller 16, adapted to travel over said track. The roller 16, is mounted in a bracket 17, which rises from the section 12,

and it is preferred to securesaid bracket to said section b means of a removable fastening 18. It w1ll thus be observed that when the section 12, is moved to the left, the bracket 17, can bedetached and said section rendered free for horizontal swinging movement. The rollers 14 and 16, are the points of suspension of the section 12, and beneath said roller 14 and carried by said section is a pintle 19, which 1s always positioned in the guide groove 13, so as to permit of free slidlng movement of said section.

Rising from the lower right hand corner of the sllding section'12, is a bolt casing 20, in which a relative long bolt 21, is mounted. This bolt has its lower end arranged in-a guide passage 22, in the base of the section 12. It is extended below said guide passage whereby it may be freely extended lnto the guide groove 13, when adjusted to one position, while when adjusted to another-position it is free to seat in a. vertical keeper recess 23, formed in the base 12. In order to limit the upward sliding movement of the bolt 21, in the casing 20, I provide the latter with a vertical slot 24, while extending through said slot and supported by the bolt is a stop screw 25, which is adapted to coact with the upper wall of said slot and thereby prevent removal of the bolt from its casing. The slot 24 is proportioned with respect to the depth of the vertical recess 23 so that on the full upward adjustment of the bolt, the lower terminal thereof will be positively disposed in line with the groove 13. This is desirable in order that the sliding door section 12 can be properly guided in its movement. When the stop screw 25, is detached from the bolt, the latter can be freely withdrawn. The upper end of the bolt is preferably positioned within convenient reach of the operator of the elevator and it is provided with-a fixed handle 26, by means of which pressure in an upward direction can be exerted against the bolt to lift the same from the keeper recess 23.

Through the-fact that the keeper recess 23, for the sliding bolt is arranged below the groove 13, it obviously follows that it would be extremely difficult for the bolt to be lifted from said recess by tools or instruments that might be inserted under the section 12, in an attempt to open the door from the outside. The slot 24, holds the bolt against r0- tation and the handle 26, of said bolt is always maintained in the full line position shown in Fi 3. This minimizes the possibility of the olt being opened by the insertion of instruments or tools through the space between the vertical edge of the section 12, and the adjacent vertical sideof the door frame. When the bolt is lifted to a point above the keeper recess 23, the section 12. is free to slide in its frame. After it has been moved slightly past the center of the recess 23, it will gravitate in the guide groove 13, and accurately guide the door section 12 in its movement. The slot 24 is proportioned with respect to the groove 13 and said recess 23 so that when the bolt is retracted from saidrecess, the pin 25 will enage the upper end wall of the mentioned s 0t and thereby prevent displacement of the lower end of the bolt from the groove 13.

In Fig. 5, it will be observed that the bolt and its casing are each of circular formation in transverse section. In Fig. 6, wherein is illustrated a modified form, the bolt 27, is of The combination with a door way frame.

having a straight longitudinal groove in its lower member and a vertical recess openin into saidgroove near the end thereof an a door mounted to slide in said frame, of a casing secured to the door in line with the groove and with said vertical recess when the door is closed, a bolt freely slidable in said casing and gravitationally engagingin said recess when the door is closed and serving to hold the door against sliding movement, the said casing having a slot therein, a stop pin removably connected with the bolt and extending through said slot, the slot being proportioned with respect to the recess and said groove so that when the bolt is retracted from the recess the engagement of the pin wlth one of the end walls of the slot will preventLdisplatcement of the bolt from oove 1n said door Way frame and.

the there y serve as a guide for the door when sliding the same, and a manipulating handle carried by said bolt. 1

. In testimony whereof I afiix my signature.

EDWARD THOMAS MURPHY. 

